Sony SRSXB23 EXTRA BASS Bluetooth Wireless Portable Speaker (Black)Go anywhere with full, crisp sound in a lightweight, stylish design. The Sony SRSXB23 EXTRA BASS Bluetooth Wireless Portable Speaker is IP67 waterproof, rustproof, dustproof and shockproof, with up to 12 hours of battery life, so your music never gets left behind. Keep the good times going with super-efficient USB-C charging, and control sound settings with the Sony | Music Center app.Play It Loud with EXTRA BASSTurn up the volume and hear the clarity of EXTRA BASS. Dual passive radiators work together with full-range speakers to enhance low-end tones, giving bass a boost.X-Balanced Speaker UnitDeveloped by Sony, the X-Balanced speaker unit achieves high sound quality and powerful sound pressure for a richer, deeper, more rewarding listening experience.How the X-Balanced Speaker Unit WorksUnlike the circular diaphragm in a conventional speaker unit, the newly developed X-Balanced speaker unit features a non-circular diaphragm. This not only maximizes the area of speaker diaphragm, increasing sound pressure for more punchy bass – it also reduces driver excursion while maintaining the same sound pressure, resulting in less distortion. Meanwhile, the unit’s off-center design and optimized weight balance help to enhance clarity and widen the sound stage.Stream Music with Bluetooth TechnologySimply connect your smartphone to this portable speaker via Bluetooth to start streaming all your favorite music.Bundle Includes:2 x Sony SRSXB23 EXTRA BASS Bluetooth Wireless Portable Speaker (Black)2 x Knox Gear Hardshell Travel and Protective Case for Bluetooth Speakers with Accessory Pouch and Carrying HandleKratos Power 18W PD Two-Port Power Adapter